2.4.0.8402000 - Disclosure - Business Combinations (Details)truefalsefalse1false falsefalseFROM_Jan01_2013_TO_Jun30_2013http://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli01true 3us-gaap_BusinessAcquisitionLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false 4us-gaap_NumberOfBusinessesAcquiredus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerThe number of businesses acquired by the entity during the period.No definition available.false03false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2false truefalseFROM_Jan01_2013_TO_Jun30_2013_wfc_AcquisitionStatusAxis_PendingAcquisitionMemberhttp://www.sec.gov/CIK0000072971duration2013-01-01T00:00:002013-06-30T00:00:00falsefalsePending Acquisition [Member]wfc_AcquisitionStatusAxisxbrldihttp://xbrl.org/2006/xbrldiwfc_PendingAcquisitionMemberwfc_AcquisitionStatusAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0nanafalse04true 3us-gaap_BusinessAcquisitionLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse05false 4us-gaap_NumberOfBusinessesAcquiredus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerThe number of businesses acquired by the entity during the period.No definition available.false0falseBusiness Combinations (Details)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://wellsfargo.com/role/DisclosureBusinessCombinationsDetails15